JP6338497B2 - Switch terminal structure - Google Patents

Description

  The present invention relates to an inter-terminal structure (parallel arrangement structure of switches) when a plurality of switches such as circuit breakers and earth leakage circuit breakers are arranged adjacent to each other.

  Circuit breakers, earth leakage circuit breakers, and other switches are divided into an upper case and a lower case, and a casing that is fixed to the lower case and provided with a plurality of terminals on the power supply side and the load side. The upper case is attached so as to cover the opening of the lower case. Further, as in Patent Document 1, from both the upper case and the lower case, a terminal interval wall that separates adjacent terminals of each pole is formed to protrude toward the other case. Furthermore, a lateral side wall is formed in each of the upper case and the lower case. Then, the side walls of the housing are configured by joining the two terminal interval walls to ensure an insulation distance between the terminals and assembling the case by bringing both lateral side walls into contact with each other.

  At this time, as shown in FIG. 5, the lateral side wall 52 of the switch 51 a is formed to be narrower than the terminal interval wall 53, specifically to be approximately half. As a result, when the switches 51a and 51b having the same shape are disposed adjacent to each other, the distance (X) between adjacent terminals in the same switch and the adjacent one of the switches 51a and the other switch 51b are adjacent to each other. The inter-terminal distance (Y) of the terminal portions 54a and 54b is the same width, and the inter-terminal distance is the same width at any location, that is, the relationship of X = Y is established, and the insulation distance is ensured and the landscape is good. It is supposed to be.

  When miniaturizing the switch configured as described above, the terminal interval wall is formed narrowly to reduce the casing width, and the insulation distance between the terminals is secured and the terminal portion A stepped terminal portion is provided in which adjacent terminals are arranged stepwise in the vertical direction so that the connection of the electric wires to each other becomes easy.

  However, as shown in FIG. 6, even when the stepped terminal portion is provided and the terminal interval wall 63 is formed to be narrow, the lateral wall 62 is similarly used in order to maintain the relationship of X = Y described above. It is usual to form narrowly. Therefore, when the plurality of switches 61a and 61b are arranged adjacent to each other, the adjacent terminal portions 64a and 64b adjacent to each other between the one switch 61a and the other switch 61b are substantially at the same height position. In some cases, the distance (Y) between the terminals becomes short, and there is a problem that a sufficient insulation distance cannot be secured.

JP 2009-43517 A

  The object of the present invention is to solve the conventional problems described above, and when a plurality of switches provided with stepped terminal portions are arranged adjacent to each other, the stepped terminal portions adjacent to each other between the switches become substantially the same height position. Even in the case, it is to provide a structure between terminals of a switch that can secure a sufficient insulation distance between terminals.

  The present invention made to solve the above problems is formed on the outside of the stepped terminal portion in which adjacent terminals of each pole are arranged in steps, the terminal interval wall separating the terminals, and the stepped terminal portions at both ends. A switch-to-terminal structure in which a switch having a side wall is arranged adjacent to each other so that the height positions of adjacent stepped terminal portions between one switch and the other switch are substantially the same. The distance between adjacent terminals (Y) between one switch and the other switch is wider than the distance (X) between terminals in the same switch. is there.

  According to a second aspect of the present invention, in the inter-terminal structure of the switch according to the first aspect, the total width of the lateral wall width of one switch and the lateral wall width of the other switch is greater than the terminal interval wall width. Is also wide.

  According to a third aspect of the present invention, in the inter-terminal structure of the switch according to the second aspect, the width of the lateral side wall of one of the switches is the same as the width of the terminal interval wall.

  According to a fourth aspect of the present invention, in the inter-terminal structure of the switch according to the second aspect, the lateral wall width of one of the switches is wider than the terminal interval wall width.

  According to a fifth aspect of the present invention, in the inter-terminal structure of the switch according to the first aspect, the casing has a two-part structure including an upper case and a lower case to which the stepped terminal portion is fixed. The lateral side wall is formed on both the case and the lower case, and the lateral side walls of the case are brought into contact with each other to form the lateral side surface of the housing. It is characterized in that it protrudes from either one of the lower cases toward the other case.

  The inter-terminal structure of the switch according to the present invention is such that the inter-terminal distance (Y) adjacent between one switch and the other switch is larger than the inter-terminal distance (X) adjacent in the same switch. It was supposed to be formed wide. Thus, when a plurality of switches provided with stepped terminal portions are arranged adjacent to each other, even when the stepped terminal portions adjacent to each other are at substantially the same height, a sufficient insulation distance between the terminals is provided. It can be secured.

  As in the invention according to claim 2, if the total width of the lateral wall width of one switch and the lateral wall width of the other switch is wider than the terminal interval wall width, The distance between adjacent terminals (Y) can be made wider between one switch and the other switch than the distance between adjacent terminals (X), and a sufficient insulation distance can be secured.

  Further, as in the invention according to claim 3, if the lateral wall width of one switch is formed to be the same width as the terminal interval wall width, the other switch disposed adjacently has the same shape. , X <Y can be maintained. Further, as in the invention according to claim 4, if the lateral wall width of one switch is formed wider than the terminal interval wall width, the lateral wall width of the other adjacent switch is narrow. Even if it exists, it becomes possible to maintain the relationship of X <Y.

  As in the invention according to claim 5, if a terminal interval wall that separates adjacent terminals protrudes from the upper case or the lower case toward the other case, a stepped terminal portion is provided. Even in this case, by projecting the terminal spacing wall from only one case, there is no joint between the terminal spacing walls projecting from both cases as in the conventional case, so a sufficient insulation distance between the terminals can be secured. It becomes. In addition, the lateral side walls are formed in the upper case and the lower case, and the lateral side surfaces of the casing are configured by bringing the lateral side walls into contact with each other. This makes it possible to secure the insulation distance from the external terminal by aligning the ends of the lateral sidewalls of both cases, and prevents the user's fingers from slipping from the outside and touching the uneven terminal part. You can also Further, the positioning of the upper case and the lower case can be easily performed, that is, the assemblability is not impaired.

It is a perspective view which shows the switch of this embodiment. It is a front view which shows the switch of this embodiment. It is a perspective view which shows the time of an assembly of an upper case and a lower case. It is a front view at the time of arranging two or more switches of this embodiment adjacent. It is a front view at the time of arranging a plurality of conventional switches adjacent to each other. It is a front view at the time of arranging a plurality of conventional switches with a reduced casing width adjacent to each other.

The front-rear direction, the left-right direction, and the up-down direction refer to the directions shown in FIG. 1, and the up-down direction indicates the direction of the upper case 3 and the lower case 4. The stepped terminal portions 6 and 6 are shown, and the left-right direction shows the width direction of the switch 1. Preferred embodiments of the present invention are shown below.
The switch 1 shown in FIG. 1 includes a housing 2 that is divided into an upper case 3 and a lower case 4. Fixed to the lower case 4 are a mechanism portion 5 having an operation handle for opening and closing, and a stepped terminal portion 6 arranged in a stepwise manner in the vertical direction, three on each of the power supply side and the load side, The upper case 3 is attached so as to cover the opening of the lower case 4. The upper case 3 and the lower case 4 are fixed by inserting screws through screw holes 7 and 7 formed on both sides. In addition, this screw hole part 7 shall be formed in the four corners of the housing | casing 2, and it uses the screw hole part 7 in at least one diagonal for fixing both cases, and is in the other diagonal. The screw hole 7 can also be used, for example, for inserting a mounting screw (not shown) of a mounting plate.

  As shown in FIG. 2, the adjacent stepped terminal portions 6a and 6b of each pole are arranged stepwise in the vertical direction, and in this embodiment, the center stepped terminal portion 6a is higher than the left and right stepped terminal portions 6b and 6b. The left and right stepped terminal portions 6b and 6b are provided at substantially the same height.

  As shown in FIG. 3, from the lower case 4, a terminal interval wall 8 separating the terminals of the adjacent stepped terminal portions 6a and 6b is formed to protrude toward the upper case 3, that is, upward. Thus, even when the stepped terminal portions 6a and 6b are provided, the terminal interval wall 8 is formed so as to protrude from both the upper case and the lower case by projecting the terminal interval wall 8 from the lower case 4. Since there is no portion, it is possible to prevent dielectric breakdown through the joint portion, and to secure a sufficient insulation distance between the terminals of the stepped terminal portions 6a and 6b in the same switch. In the present embodiment, the terminal spacing wall 8 is projected from the lower case 4 toward the upper case 3. However, the terminal spacing wall 8 is formed to project from the upper case 3, and the lower case 4 A concave portion with which the terminal interval wall 8 engages may be formed, and in this case, the junction portion of the terminal interval wall 8 is formed to be eliminated.

  Lateral side walls 9 are formed at both ends of the left and right stepped terminal portions 6b, 6b, and the lateral side wall 9a of the upper case 3 and the lateral side wall 9b of the lower case 4 are brought into contact with each other. The lateral side was to be configured. This makes it possible to secure the insulation distance from the external terminal by aligning the ends of the lateral side walls 9a, 9b of both cases, and the user's finger slides in from the outside, and the left and right stepped terminal portions Touching 6b and 6b can also be prevented. Further, the upper case 3 and the lower case 4 can be easily positioned at the time of assembly, and the assemblability is not impaired. Conventionally, the screw hole portion 7 is formed in the terminal interval wall 8. However, in the present embodiment, at the position along the lateral side walls 9 a and 9 b, the housing 2 is located inside the stepped terminal portion 6 b. The width of the terminal interval wall 8 can be reduced.

  With respect to the switch 1a configured as described above, a case where a switch having the same shape is arranged adjacently as shown in FIG. 4 (hereinafter, adjacent switch 1b) will be described. As shown in FIG. 4, the stepped terminal portion 6b at the right end of the switch 1a and the stepped terminal portion 6d at the left end of the adjacent switch 1b are adjacent to each other, and they are arranged so as to have substantially the same height position. Yes. In this case, the terminals of the stepped terminal portions 6b and 6d that are adjacent between the switch 1a and the adjacent switch 1b are larger than the inter-terminal distance (X) of the stepped terminal portions 6a and 6b that are adjacent in the same switch 1a. The distance (Y) was formed to be wide. In addition, the distance between the terminals of the adjacent terminal portions 6c and 6d adjacent in the adjacent switch 1b is also X. Thereby, when the adjacent switch 1b is arranged in parallel with the switch 1a provided with the stepped terminal portion 6, the stepped terminal portions 6b and 6d adjacent to each other between the switches 1a and 1b are substantially the same height. However, due to the relationship of X <Y, a sufficient insulation distance between the terminals can be secured.

  As shown in FIG. 4, in order to establish the relationship of X <Y described above, the total width of the lateral wall width (A) of the switch 1a and the lateral wall width (B) of the adjacent switch 1b is the terminal. It was formed so as to be wider than the interval wall width (C). That is, by setting C <A + B, the relationship X <Y can be established. Further, as in this embodiment, if the lateral wall width (A) of the switch 1a is formed to be the same width as the terminal interval wall width (C), if the adjacent switch 1b has the same shape, C = A = B, so that C <A + B, and the relationship X <Y can be maintained. In the above embodiment, the switch 1a and the adjacent switch 1b are described as being in close contact with each other. However, the switch 1a and the adjacent switch 1b may be arranged with a gap between them. . In that case, the lateral wall width (A) of the switch 1a and the lateral wall width (B) of the adjacent switch 1b are matched, and there is a gap between the switch 1a and the adjacent switch 1b. Therefore, the relationship X <Y can be maintained, and the insulation distance between the adjacent stepped terminal portions 6b and 6d can be secured between the switch 1a and the adjacent switch 1b.

  If the lateral wall width (A) of the switch 1a is formed wider than the terminal interval wall width (C), the adjacent switch 1b has a different shape from the switch 1a, and in particular, the side of the adjacent switch 1b. Even when the side wall width (B) is narrow, the relationship C <A + B can be established, and the relationship X <Y can be maintained.

  As shown in FIG. 3, the upper surface of the lateral side wall 9 b of the lower case 4 is provided with a convex portion 10 formed to project upward along the longitudinal direction of the housing 2, and further, the lateral side wall 9 a of the upper case 3 is On the lower surface, the concave portion 11 into which the convex portion 10 is fitted is similarly provided along the longitudinal direction of the housing 2. Thereby, the positioning can be easily performed by fitting the convex portion 10 and the concave portion 11 together. Moreover, when the convex part 10 and the recessed part 11 were formed along the longitudinal direction of the housing | casing 2, when the several switch 1a, 1b is arrange | positioned adjacently, it has the effect which can ensure the insulation distance longer. It will be. In addition, although the convex part 10 is formed in the lower case 4 and the concave part 11 is formed in the upper case 3, the convex part 10 is formed in the upper case 3 and the concave part 11 is formed in the lower case 4. It may be.

  As shown in FIG. 3, the upper case 3 is preferably formed with an engaging portion with which the terminal interval wall 8 engages. This facilitates positioning of the upper case 3 and the lower case 4 during assembly. At the same time, it is possible to restrict the upper case 3 from moving and shifting after assembly. The engaging portion is formed on the front side wall 12 and the rear side wall (not shown) of the upper case 3, and the terminal interval wall 8 is formed with a step portion 13 that engages with the front side wall 12 and the rear side wall. did. Thereby, it can prevent that the upper case 3 moves to the front-back direction with respect to the lower case 4, and shift | deviates because the step part 13 contact | abuts with the front side wall 12 and the rear side wall. Furthermore, the upper case 3 moves in the left-right direction relative to the lower case 4, that is, in the width direction of the housing 2 by forming the notch portion 14 that is clamped so as to straddle the terminal interval wall 8 as the engaging portion. Can be prevented.

  In the present embodiment, the terminal case wall 8 is not formed in the upper case 3. This is because if the terminal spacing wall 8 is formed even a little in the upper case 3, the portion becomes insufficient in strength and may be damaged. In addition, it is preferable to form the upper end of the terminal space | interval wall 8 so that it may become substantially the same height as the upper end of the side wall 9a of the upper case 3. FIG. The heights of the upper end of the terminal interval wall 8 and the upper end of the lateral side wall 9a may be shifted. However, when a terminal cover or the like (not shown) is attached to the upper portion of the terminal interval wall 8, the height should be substantially the same. Is preferred.

  Further, the tip end portion of the terminal interval wall 8 (specifically, a portion protruding forward or rearward) is formed in a notch shape, and a terminal cover, an insulation barrier or the like (not shown) can be attached to this tip portion. Be good.

DESCRIPTION OF SYMBOLS 1 Switch 2 Case 3 Upper case 4 Lower case 5 Mechanism part 6 Stepped terminal part 7 Screw hole part 8 Terminal space | interval wall 9 Lateral side wall 10 Convex part 11 Concave part 12 Front side wall 13 Step part 14 Notch part 51 Switch 52 Lateral side wall 53 Terminal spacing wall 54 Terminal section 61 Switch 62 Side wall 63 Terminal spacing wall 64 Stepped terminal section

Claims (5)

A stepped terminal portion in which adjacent terminals of each pole are disposed in a stepped manner,
A terminal spacing wall separating the terminals;
A switch with a lateral wall formed on the outside of the stepped terminal portion at both ends,
The inter-terminal structure of the switch disposed adjacently so that the height position of the stepped terminal portion adjacent between one switch and the other switch is substantially the same,
Than the distance (X) between terminals in the same switch
A structure between terminals of a switch, characterized in that the distance (Y) between adjacent terminals between one switch and the other switch is formed wide. The total width of the lateral wall width of one switch and the lateral wall width of the other switch is
The inter-terminal structure of a switch according to claim 1, wherein the inter-terminal structure is wider than a terminal interval wall width.   The inter-terminal structure of a switch according to claim 2, wherein the width of the side wall of one of the switches is the same as the width of the terminal interval wall.   The inter-terminal structure of a switch according to claim 2, wherein the lateral wall width of one of the switches is wider than the terminal interval wall width. The housing has a two-part structure composed of an upper case and a lower case to which the stepped terminal portion is fixed.
Both the upper case and the lower case are formed with the lateral sidewalls, and the lateral sidewalls of the two cases are brought into contact with each other to form the lateral side surface of the housing.
The inter-terminal structure of a switch according to claim 1, wherein the terminal interval wall is formed to project from either the upper case or the lower case toward the other case.